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People wondering about the octane thing - our 94 Octane here is ethanol free, when I called an American Chevron a couple weeks ago to see if it would be cheaper/feasible to buy my gas there they told me that their 92 has ethanol in it. And yes they use the same (RON+MON)/2 system that we do.

I'm not sure why so many people say that it's easier to tune with their gas. Maybe ethanol lets you advance the **** out of your ignition much more than a cooler burning mixture at the same octane.

People wondering about the octane thing - our 94 Octane here is ethanol free, when I called an American Chevron a couple weeks ago to see if it would be cheaper/feasible to buy my gas there they told me that their 92 has ethanol in it. And yes they use the same (RON+MON)/2 system that we do.

I'm not sure why so many people say that it's easier to tune with their gas. Maybe ethanol lets you advance the **** out of your ignition much more than a cooler burning mixture at the same octane.

It's not just hear-say. For example, during RG's Dyno Day. (barring weather conditions, which yes, i know, i know, do affect a tune), there was an E10 with a tune from down south at English Racing. It was on 92 (presumably with ethanol). It knocked hard at the end of the runs, (coincidentally, so did I)

RGs explanation was that our 94 barely meets the AKI spec, and that their 92 (with or without ethanol, we'll get into that later) is even better than our Chevron ethanol-free 94 in terms of power output/octane. Without a proper control set, it's hard to say, since there was no controlled experiment.

I'm almost tempted to grab a jerry can of US 92oct w/ethanol, CAN 91/92oct w/ ethanol, our 94 w/o ethanol, and the uber rare US 94 w/o ethanol to test, and finally put an end to it. But can't REALLY be arsed about it. I'll also quote myself below for some "theory" as to why it's necessarily better, which I think we can safely assume is factual for the most part.

To add, I've also seen various graphs with Ethanol gas tunes and non Ethanol, and it seems that the Ethanol blended in (up to 10% here) is insignificant harm (people complain about rubber hoses, fuel filters etc) as most modern (2006+) cars should be able to run it no problem. However, it does provide slightly less "power" for consumption, so you may end up with less mileage/peak power, and OL tuning may be required if you switch.

Quote:

Originally Posted by DIGGYGV8

from what I've been explained. there's a few theories.

Since they truck their gas further in the states, they actually are a much higher octane rating so over time it still "meets" 92 or higher. this is especially true if you go to the interior of BC. their 91/94 is **** compared to the stuff we get, and you will have to pull massive timing.

the other is that they do have the same rating ron/+mon/2 (AKI) but it would depend on who did the RON calculation as those are often inaccurate.

I'm just going to throw this out there, but there is a HIN on July 27 Saturday at the Tacoma Dome in Seattle.http://www.hotimportnights.com/category/schedule/
I know that some people can't make it, but for the people that can make it. It would be a perfect car enthusiast weekend.
Plus, it would save you from waking up soooo early
And for the people that will be heading down on July 28, we could meet at our hotel at a certain time. And head over to the meet, its only 45 minutes away from the meet.